This is no joke I done some crazy neglect on my tank/and the hobby I didn't quite and Def didn't crash my tank but after just about 6 months of no water changes/Doser shut down skimmer clean maybe 3 Times the so called blizzard of 2015 had me stuck in my house I installed a new 300 plus gallon skimmer and clean my entire system am now working on running 4 metAl halides renegade is back to reefing I just need some coral now .... lmk thanks